2.5" drive docking station?

[lopkinfop]

i have just seen this

http://www.overclockers.co.uk/showp... 2.5" eSATA + USB 2.0 Combo & Docking Station



what would the docking station do? is it in one of the drive bays in a PC so you can hot swap it?

 

[Snapshot]

Yes, it fits in a 3.5" bay.